>the plastic can easily withstand temperatures greater than that needed for wax to melt. I would simply but the frame in boiling water until the wax melts then remove the frame. Wax melts at about 145 F. The water would only need to be a bit more than that wouldn't it? I'm not sure I'd want boiling water. I tried to reclaim some plastic foundations a few years back by placing them in a solar melter for a short period of time, and in a short period of time they were no longer suitable for use in a Langstroth hive. Regards, Dick